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arch/arm/mach­s3c6410/mach­my6410.c:

static struct gpio_keys_button my6410_buttons[] = {

    {

        .gpio        = S3C64XX_GPN(0),

        .code        = KEY_UP,

        .desc        = "Up",

        .active_low    = 1,

        .wakeup        = 0,

    },

    {

        .gpio        = S3C64XX_GPN(1),

        .code        = KEY_DOWN,

        .desc        = "Down",

        .active_low    = 1,

        .wakeup        = 0,

    },

    {

        .gpio        = S3C64XX_GPN(2),

        .code        = KEY_LEFT,

        .desc        = "Left",

        .active_low    = 1,

        .wakeup        = 0,

    },

    {

        .gpio        = S3C64XX_GPN(3),

        .code        = KEY_RIGHT,

        .desc        = "Right",

        .active_low    = 1,

        .wakeup        = 0,

    },

    {

        .gpio        = S3C64XX_GPN(4),

        .code        = KEY_ENTER,

        .desc        = "Enter",

        .active_low    = 1,

        .wakeup        = 0,

    },

    {

        .gpio        = S3C64XX_GPN(5),

        .code        = KEY_ESC,

        .desc        = "Esc",

        .active_low    = 1,

        .wakeup        = 0,

    }

};

static struct gpio_keys_platform_data my6410_button_data ={

    .buttons    =my6410_buttons,

    .nbuttons    =ARRAY_SIZE(my6410_buttons),

};

static struct platform_device my6410_device_button    = {

    .name        ="gpio-keys",

    .id            = -1,

    .dev        = {

    .platform_data =&my6410_button_data,

    },

};

Device Drivers --->

    Input device support --->

        [*] Keyboards --->

             <*> GPIO Buttons

在移植按键驱动时候可能出现一下错误：

arch/arm/mach-s3c64xx/mach-my6410.c:298: error: array type has incomplete element type

arch/arm/mach-s3c64xx/mach-my6410.c:300: error: field name not in record or union initializer

arch/arm/mach-s3c64xx/mach-my6410.c:300: error: (near initialization for 'my6410_buttons')

arch/arm/mach-s3c64xx/mach-my6410.c:301: error: field name not in record or union initializer

arch/arm/mach-s3c64xx/mach-my6410.c:301: error: (near initialization for 'my6410_buttons')

arch/arm/mach-s3c64xx/mach-my6410.c:302: error: field name not in record or union initializer

arch/arm/mach-s3c64xx/mach-my6410.c:302: error: (near initialization for 'my6410_buttons')

arch/arm/mach-s3c64xx/mach-my6410.c:303: error: field name not in record or union initializer

arch/arm/mach-s3c64xx/mach-my6410.c:303: error: (near initialization for 'my6410_buttons')

arch/arm/mach-s3c64xx/mach-my6410.c:304: error: field name not in record or union initialize

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可以看出这个错误提示的意思是没有找到定义的数组，然后其他的就引起一连串的错误，解决的办法很简单就是把

#include <linux/gpio_keys.h>

这个头文件添加进去就可以了。